Thanks for the report, the tests should indeed be aligned to use the same syntax.
I will cherry pick your PR to 2.0 as well (no need to expand exclude list as I don't think the test in necessarily "wrong").

Also, if I understand correctly, it is up to the server if it wants to collapse '//' into a single '/' or if it wants to treat it as a different resource.

Got any source for this? Not disputing it, just casually interested.